<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
	<form action="/free-practice/add" method="post">
		<input name="sumvalue" value="请输入100以内的数字" /> <input type="submit"
			value="求累加和" />
	</form>
</body>
</html>